The Court also imposed the condition to deposit two sureties of Rs 1 lakh each and a fine of Rs 10 lakh.
Notably, Lalu Prasad so far has been convicted in four out of the five cases related to multi-crore fodder scam cases
The Rashtriya Janata Dal president also wrote to the institute's director, asking him to continue his treatment at the facility till he recovers fully.
Lalu Prasad was shifted to RIMS on March 17 after he complained of chest pain and discomfort. He was convicted in the fourth fodder scam case by a CBI court on March 19.
After Lalu's sentencing in fourth fodder scam case, Tejashwi Yadav alleges threat to his father's life
Tejashwi Yadav alleged that there is a threat to his father's life adding that a conspiracy is being hatched by the Bharatiya Janata Party.
Lalu Prasad Yadav sentenced to 14 years in jail, fined Rs 60 lakhs in fourth fodder scam case; son Tejashwi slams NDA
The special CBI courts in Ranchi have earlier handed Yadav jail terms for 13 years and a half after finding him guilty in three other cases of the scam.
A special CBI court in Ranchi on Monday convicted former Bihar Chief Minister Lalu Prasad in the fourth fodder scam case but acquitted another former Chief Minister Jagannath Mishra.
Lalu Prasad and others are accused of fraudulently withdrawing Rs. 3.13 crore from Dumka treasury between December 1995 and January 1996, when the former was the chief minister of undivided Bihar.
Fodder scam: RJD chief Lalu Prasad Yadav, ex-Bihar CM Jagannath Mishra get five-year jail term in Chaibasa Treasury case
Prasad who is also supposed to pay up Rs 5 lakh in fine had been convicted in the first fodder scam case involving withdrawal of Rs 37.7 crore from Chaibasa treasury on September 30, 2013.
A row has erupted following media reports that two "personal aides" of Lalu Prasad were sent to a Ranchi prison to "serve" him, hours before the RJD supremo was lodged there.
The former Union Minister is currently lodged in a Patna jail after his conviction by a CBI court in a fodder scam case.
CBI court judge proposed that all the 16 convicts in the fodder scam case will stay in an open jail where they could rear cattle.
The jailed leader's sister Gangotri Devi passed away on Sunday morning due to what his family said was extreme trauma over his jail sentence.
Tejashwi Yadav, Prasad's son, said the family had tried to communicate the news of Gangotri Devi's death to Prasad through the prison authorities in Ranchi.
Expressing solidarity with jailed RJD chief Lalu Prasad, Samajwadi Party supremo Akhilesh Yadav said today that the "BJP did injustice" to him.